Seat for skateboard



FIG. 1 is a left side view of a seat for skateboard showing my newdesign, the right side being a mirror image thereof;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view; and

FIG. 5 is a bottom plan view, thereof.

The ornamental design for a seat for skateboard, as shown and described.